Rugged And Reliable Externally Fed Rotary Drum Screen Flexible And Versatile Energy Saving

Rugged and Reliable Externally Fed Drum Screen Flexible and Versatile Energy Saving

Brief Description

This robust and reliable drum screen demonstrates superior performance in meeting diverse industrial screening needs. Its flexible and modular design allows for quick adaptation to various scenarios, including coal, sand, gravel, and solid waste treatment. The equipment utilizes advanced drive technology, ensuring energy-efficient and environmentally friendly operation, effectively reducing enterprise energy expenditures. The unique external feed inlet design ensures more even material distribution and avoids localized overload. It maintains excellent stability even in harsh industrial environments, minimizing downtime. Choosing it is not just choosing a piece of equipment, but also introducing your company with a worry-free, labor-saving, green, and efficient long-term partner.

Product Overview

Our Externally Fed Drum Screen is a robust, high-efficiency mechanical filtration solution engineered to capture fine suspended solids, fibrous materials and miscellaneous debris. Adopting an outside-in flow pattern, water permeates the screen media from exterior to interior. This structural design delivers superior performance under high solid loading conditions and reliably produces pre-screened clarified water, making it well-suited for surface water intake facilities, industrial process water circulation and advanced wastewater polishing treatment sections.

Working Principle

*Feed Introduction: Raw wastewater or process fluid is uniformly distributed onto the exterior surface of the slowly rotating drum screen cylinder.
*Particle Separation: Driven by water pressure, liquid permeates precision filter media including wedge wire, perforated plates or mesh into the drum interior, while suspended solids are intercepted and attached to the outer screen surface.
*Residue Removal System: Continuous drum rotation elevates trapped contaminants above the liquid level. High-pressure spray jets positioned at the upper section flush these accumulated solids thoroughly using filtered effluent or clean water sources.
*Two-phase Discharge: Dislodged solid waste drops into a centralized collection hopper for subsequent disposal, whereas the clarified filtrate is discharged through the drum’s axial outlet for further utilization or treatment.

Key Design & Performance Features

*Handles High Solids Loads Effectively
The external feed design allows for better distribution of incoming flow and is less prone to rapid blinding under high solids conditions compared to some internally fed designs, ensuring stable operation.

*Large Filtration Surface Area
The entire external circumference of the drum is utilized for filtration, providing a generous surface area to maintain high flow rates with low head loss.

*Proven, Simple, and Robust Design
With fewer internal components exposed to the raw influent, the design is often simpler and highly robust, leading to reliable operation and reduced maintenance needs.

*Excellent Pre-Treatment or Final Screening
Effectively removes fine particles (down to specified micron ratings), protecting downstream equipment such as membranes, UV systems, or heat exchangers, or producing high-quality effluent for discharge/reuse.

*Adaptable and Customizable
Available in a wide range of screen apertures (microns or millimeters), diameters, and widths to suit specific flow rates and water quality requirements. Constructed primarily in stainless steel for corrosion resistance.

Applications

*Municipal Raw Water Pretreatment: Effectively intercepts floating debris, algae colloids, and fine suspended solids in rivers, lakes, and reservoirs, providing a solid first line of defense for urban water supply networks and large factory water intakes.

*Multi-Industry Production Water Recycling and Purification: Widely applicable to heavy and light industrial scenarios such as power generation, papermaking, and food and beverage, specifically designed for cooling water recycling and upstream purification of process water, precisely protecting downstream precision equipment from wear and clogging due to impurities.

*Deep Wastewater Treatment to Meet Standards: As the final protection unit for municipal wastewater treatment plants and industrial park wastewater treatment stations, it deeply filters out residual fine particulate matter, stably meeting stringent environmental emission limits and reducing compliance risks.

*Aquaculture Recirculating Aquaculture System Operation and Maintenance: Continuously filters out uneaten feed and feces from aquaculture water, optimizing the transparency and dissolved oxygen environment of circulating water, reducing disease breeding, and improving fish and shrimp survival rates.

Company Profile

WESUS is a leading manufacturer and total solution provider for advanced sewage and sludge treatment systems. Founded in Yixing, China in 2013, we offer reliable, cost-effective equipment and engineering services to global clients. Certified with ISO 9001, ISO 14001 and ISO 45001, we possess strong in-house R&D and manufacturing capabilities supported by a large production base, a professional technical team, patents and university cooperation. Our comprehensive product range includes screening, filtration, sludge dewatering, mixing, aeration and customized solutions. With end-to-end services from design to after-sales support and proven global project experience, we have earned wide recognition including national high-tech enterprise and 5-star after-sales certifications. Adhering to the philosophy of real innovation, excellence and win-win cooperation, WESUS is committed to providing smart, sustainable water treatment solutions for municipal and industrial clients worldwide.

FAQ
Q1: Are you a direct manufacturer? What certifications do you hold?  
A: We are a direct manufacturer with our own production facilities and R&D team. We maintain full control over quality, cost, and delivery, and hold certifications including ISO 9001/14001 for our core products.

Q2: What types of collaboration models do you offer?  
A: We provide flexible solutions:  
- Equipment Supply: Standalone or packaged systems.  
- Turnkey Solutions (EPC): Design, procurement, construction, and commissioning.  
- Technical Cooperation: Process upgrades, operational maintenance support, and technical consulting.

Q3: How is after-sales service and support ensured?  
A: We provide full lifecycle support:  
- Warranty: 12–24 months on core equipment.  
- Response: 7x24 remote support with fast on-site assistance when needed.  
- Spare Parts: Genuine parts are stocked for long-term supply security.  
- Maintenance: Annual Maintenance Contracts (AMC) are available to ensure long-term system efficiency.

Q4: What is your typical project execution process?  
A: Our standardized workflow ensures efficiency and transparency:  
1. Requirement Analysis → 2. Proposal & Quotation → 3. Design Finalization → 4. Production & Factory Testing → 5. Shipping & Installation → 6. Commissioning & Training → 7. After-sales Service.  
Customer involvement is encouraged at key milestones.

Q5: Can you provide references or case studies?  
A: We have extensive global project experience across municipal and various industrial sectors. We can provide detailed, anonymized case studies and client references upon request.

Q6: What are your payment terms and delivery lead times?  
A: - Payment: We accept T/T and L/C, with standard industry progress payment terms.  
- Lead Time: Standard equipment: 4–8 weeks.  Large custom projects: 12–20 weeks. 
A clear production schedule is provided upon contract signing.

Q7: How do you serve international clients?  
A: We are experienced in international projects, arranging complete logistics (FOB, CIF, DDP, etc.) and providing full customs documentation. Our designs pre-consider compliance requirements in target markets.

Q8: Can you upgrade or retrofit existing systems?  
A: Yes. We specialize in evaluating existing facilities and providing customized retrofit and expansion solutions to enhance performance and capacity with minimal investment and downtime.

Q9: How can we start a consultation?  
A: Please contact our Sales Engineering team. To facilitate an efficient discussion, please have your treatment requirements, water quality data, and site information ready. We will provide a preliminary proposal and professional advice.